Metastability in Spin-Polarized Fermi Gases
arXiv:1105.6369 · doi:10.1103/PhysRevLett.107.145305
Abstract
We study the role of particle transport and evaporation on the phase separation of an ultracold, spin-polarized atomic Fermi gas. We show that the previously observed deformation of the superfluid paired core is a result of evaporative depolarization of the superfluid due to a combination of enhanced evaporation at the center of the trap and the inhibition of spin transport at the normal-superfluid phase boundary. These factors contribute to a nonequilibrium jump in the chemical potentials at the phase boundary. Once formed, the deformed state is highly metastable, persisting for times of up to 2 s.
4 pages, 6 figures
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Cited by in corpus (19)
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- Imbalanced Fermi Gases at Unitarity
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